Vocab crossword

Species that are important to the life of other species
act of oxidizing amonia into nitrite then nitrate
large community of plants and animals inhabiting an environment
symbiotic slow-growing plant
nature centered beliefs
removal of salt from ocean water to make it potable
expansion of urban areas
relationship that benefits both organisms
living factor that affects the enviornment
nonliving factor that affects the environment
epidemic that spreads internationally
to maintain at a certain rate
someone who studies changes in human population
from which metals and valuable minerals are extracted
break down by natural agents like wind or water
first colonizers of an ecosystem
growing of a single plant/organism in the same area
variety of life in an environment
an organism is benefiting while the other isn't being benefited nor harmed
photosynthesizer (self nurishing)